In the back alleys of Saigon, nineteen-year-old Bảo survives by his fists, guarding his turf with stubborn defiance and caring for his grandmother in their cramped apartment above a phở stall. His life is one of routine-until a silent witch named Ingrid appears, claiming to be from another world and warning of a cosmic threat known as the Solstice, a being bent on erasing all chaos, all life, into a perfect, silent void.
Drawn into a war he doesn't understand, Bảo must harness his raw, untamed Chi-a force the Solstice cannot comprehend-and learn to fight enemies that feed on sound, color, and will itself. But the hunters are already on their trail, and to save his city, his grandmother, and perhaps both worlds, Bảo will have to leave everything he's ever known behind.